CN204213167U - Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime - Google Patents
Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime Download PDFInfo
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- CN204213167U CN204213167U CN201420623872.9U CN201420623872U CN204213167U CN 204213167 U CN204213167 U CN 204213167U CN 201420623872 U CN201420623872 U CN 201420623872U CN 204213167 U CN204213167 U CN 204213167U
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- ring
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- 238000005096 rolling process Methods 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 title claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 238000005255 carburizing Methods 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000295 complement effect Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000010791 quenching Methods 0.000 abstract description 2
- 230000000171 quenching effect Effects 0.000 abstract description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 102220057728 rs151235720 Human genes 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
轧机压下机构用长寿命满装推力圆锥滚子轴承，由座圈、轴圈和推力圆锥滚子组成。在与现有外形尺寸相同下，轴承内部尺寸采用申请人独创的“滚动轴承极限设计法”设计，在保证强度情况下，使轴圈和座圈有效臂最薄，滚子直径，滚子长度,滚子半锥角ψ＝9°40′±5′，滚子个数Z＝18个。为无保持架满装结构，获得最大额定静载荷值，满足用户长寿命要求。轴圈上端为凸球面，刚性好，与压下螺丝凹球面相配合，具有可调心性。滚子轴线、轴圈和座圈的滚道母线延长线交于轴承中心轴线上一点，保证低转速滚子表面不会打滑、纯滚动、启动灵活。材料选用渗碳钢和渗碳淬火热处理工艺能提高零件表面耐磨性，心部韧性好，可承受较大冲击载荷。用于钢铁及冶金行业轧机压下机构。
Long-life full complement thrust tapered roller bearings are used for the pressing mechanism of rolling mills, which are composed of seat ring, shaft ring and thrust tapered rollers. Under the same external dimensions as the existing ones, the internal dimensions of the bearing are designed using the applicant's original "rolling bearing limit design method". Under the condition of ensuring the strength, the effective arm of the shaft ring and seat ring is the thinnest, and the diameter of the roller is the smallest. , roller length ,Roller semi-cone angle ψ=9°40′±5′, number of rollers Z=18. It is a full-complement structure without a cage to obtain the maximum rated static load value and meet the user's long-life requirements. The upper end of the shaft ring is a convex spherical surface, which has good rigidity, matches with the concave spherical surface of the pressing screw, and has adjustable centering. The roller axis, the extension line of the raceway generatrix of the shaft ring and the seat ring intersect at a point on the center axis of the bearing to ensure that the surface of the low-speed roller will not slip, purely roll, and start flexibly. The material selection of carburizing steel and carburizing and quenching heat treatment process can improve the wear resistance of the surface of the parts, and the core has good toughness and can withstand large impact loads. It is used for pressing mechanism of rolling mill in iron and steel and metallurgical industry.
Description
(一)技术领域： (1) Technical field:
一种推力圆锥滚子轴承，属大型轴承。用于轧机压下机构。冶金、有色行业中通常称为轧机压下轴承。属工程元件轴承类(F16C)。 The utility model relates to a thrust tapered roller bearing, which belongs to a large bearing. Used in rolling mill pressing mechanism. In the metallurgical and non-ferrous industries, it is usually called rolling mill pressing bearing. Belongs to engineering component bearings (F16C).
(二)背景技术： (two) background technology:
现有冶金钢铁、有色行业轧机压下机构用的推力圆锥滚子轴承(下面可简称为压下轴承)，见图3和图1，现有压下轴承包括：静止的座圈1、相对座圈转动的轴圈3、座圈和轴圈竖向h间设一列沿周向均布多个的推力圆锥滚子2；轴圈3上端有与它配合的压下螺丝4。现有座圈外径D1＝409.58mm；现有轴圈外径D3＝407.21mm，轴圈球面截圆公称直径d3＝355.6mm，现有轴承公称高度H3＝121mm，轴承总高度H＝140.77mm。整个轴承装在轴承座5内。现有压下轴承存在如下问题：因1套轴承需承受轧机1/2轧制力，受载大，而现有轧机压下轴承中推力圆锥滚子直径小、长度短，轴承的额定静载荷值低，不能满足用户载荷大、长寿命的要求。 Existing thrust tapered roller bearings (hereinafter referred to simply as pressing bearings) for rolling mill pressing mechanisms in the metallurgical, iron and non-ferrous industries are shown in Figure 3 and Figure 1. The existing pressing bearings include: stationary seat ring 1, opposite seat A row of thrust tapered rollers 2 uniformly distributed along the circumferential direction between the shaft ring 3, the seat ring and the shaft ring in the vertical direction h of the circle rotation; The outer diameter of the existing seat ring D 1 = 409.58mm; the outer diameter of the existing shaft ring D 3 = 407.21mm, the nominal diameter of the spherical section of the shaft ring d 3 = 355.6mm, the nominal height of the existing bearing H 3 = 121mm, and the total height of the bearing H=140.77mm. Whole bearing is contained in the bearing seat 5. The existing pressing bearings have the following problems: Because one set of bearings needs to bear 1/2 of the rolling force of the rolling mill, the load is large, and the thrust tapered rollers in the existing rolling mill pressing bearings have small diameters and short lengths, and the rated static load of the bearings If the value is low, it cannot meet the user's requirements for heavy load and long life.
(三)发明内容： (3) Contents of the invention:
本实用新型提出的轧机压下机构用长寿命满装推力圆锥滚子轴承，其目的就是解决现有轧机推力圆锥滚子轴承额定静载荷值低、使用寿命短的问题。 The utility model proposes a long-life full-complement thrust tapered roller bearing for rolling mill pressing mechanism, and its purpose is to solve the problems of low rated static load value and short service life of the existing rolling mill thrust tapered roller bearing.
技术方案如下： The technical solution is as follows:
轧机压下机构用长寿命满装推力圆锥滚子轴承，具有静止的座圈，相对座圈转动的轴圈，座圈和轴圈竖向h间设一列沿周向均布多个Z的推力圆锥滚子；轴圈上端有与它配合的压下螺丝。轴承外形尺寸为：座圈外径D1＝409.58mm，轴圈外径D3＝407.21mm，轴圈球面截圆公称直径d3＝355.6mm，轴承公称高度H3＝121mm，轴承总高度H＝140.77mm。其特征是：1)推力圆锥滚子最大直径 ，滚子长度，滚子半锥角ψ＝9°40′±5′，沿周向均布多个推力圆锥滚子个数Z＝18个。2)轴圈上端为凸球面，与压下螺丝下端的凹球面相配合。3)每个推力圆锥滚子的轴线、轴圈滚道母线延长线和座圈滚 道母线长线均交于轴承中心轴线O1O2上一点O。 The long-life full-complement thrust tapered roller bearing is used for the pressing mechanism of the rolling mill. It has a stationary seat ring and a shaft ring that rotates relative to the seat ring. A row of thrust tapered rollers with multiple Zs evenly distributed along the circumferential direction is arranged between the seat ring and the shaft ring vertically h. The upper end of the shaft ring has a pressing screw that cooperates with it. The outer dimensions of the bearing are: the outer diameter of the seat ring D 1 = 409.58mm, the outer diameter of the shaft ring D 3 = 407.21mm, the nominal diameter of the spherical section of the shaft ring d 3 = 355.6mm, the nominal height of the bearing H 3 = 121mm, and the total height of the bearing H =140.77mm. Its characteristics are: 1) The maximum diameter of the thrust tapered roller , roller length , Roller semi-cone angle ψ=9°40′±5′, number of thrust tapered rollers uniformly distributed along the circumferential direction Z=18. 2) The upper end of the shaft ring is a convex spherical surface, which matches the concave spherical surface at the lower end of the pressing screw. 3) The axis of each thrust tapered roller, the extension line of the raceway generatrix of the shaft ring and the long line of the raceway generatrix of the raceway all intersect at a point O on the central axis O 1 O 2 of the bearing.
压下轴承的上述结构要素可选最优化的数值为：推力圆锥滚子最大直径Dw＝63.808mm，滚子长度L＝147.5mm，滚子半锥角ψ＝9°40′，沿周向均布多个推力圆锥滚子个数Z＝18个。上述座圈、轴圈和滚子材质可采用G20Cr2Ni4A渗碳钢，表面硬度为58-62HRC，心部硬度为25-45HRC。 The above-mentioned structural elements of the press-down bearing can be optimized as follows: the maximum diameter of the thrust tapered roller Dw=63.808mm, the length of the roller L=147.5mm, the semi-cone angle of the roller ψ=9°40′, and more uniformly distributed along the circumferential direction The number of thrust tapered rollers Z=18. The above seat ring, shaft ring and roller can be made of G20Cr2Ni4A carburizing steel, the surface hardness is 58-62HRC, and the core hardness is 25-45HRC.
本实用新型有益效果： Beneficial effects of the utility model:
1)轴承内部尺寸采用申请人独创的“滚动轴承极限设计法”设计，在保证强度的情况下使轴圈有效臂厚尺寸h3和座圈有效臂厚尺寸h1最小(见图1)，滚子直径Dw最大，长度L最长(见图2)，可以装最多数量Z的滚子，成为无保持架满装滚动体结构。根据GB/T4662标准滚动轴承额定静载荷计算公式可得到该轴承最大的额定静载荷值，轴承实现长寿命。2)滚子轴线与轴圈滚道母线延长线、座圈的滚道母线延长线交于轴承中心轴线上一点，保证滚动体和两个滚道之间为纯滚动，在滚动表面任何点都不会打滑或滑动，轴承启动灵活。3)轴圈3上端为凸球面3.1刚性好，凸球面3.1与压下螺丝4下端的凹球面4.1相配合，具有良好调心性。4)各零件材料选用G20Cr2Ni4A渗碳钢，经渗碳、淬火、回火等热处理工序后，表面硬度为58-62HRC，心部硬度为25-45HRC，表面耐磨，心部又有好的韧性，可承受较大冲击载荷。 1) The internal dimensions of the bearing are designed by the applicant's original "rolling bearing limit design method". Under the condition of ensuring the strength, the effective arm thickness dimension h 3 of the shaft ring and the effective arm thickness dimension h 1 of the seat ring are minimized (see Figure 1). The sub-diameter Dw is the largest, and the length L is the longest (see Figure 2). It can hold the largest number of rollers Z, and it becomes a full-complement rolling element structure without a cage. According to the GB/T4662 standard rolling bearing rated static load calculation formula, the maximum rated static load value of the bearing can be obtained, and the bearing achieves long life. 2) The axis of the roller intersects with the extension line of the raceway busbar of the shaft ring and the extension line of the raceway busbar of the seat ring at a point on the central axis of the bearing to ensure pure rolling between the rolling body and the two raceways, and at any point on the rolling surface There is no slipping or sliding, and the bearings start flexibly. 3) The upper end of the shaft ring 3 is a convex spherical surface 3.1 with good rigidity, and the convex spherical surface 3.1 cooperates with the concave spherical surface 4.1 at the lower end of the pressing screw 4, which has good self-alignment. 4) The material of each part is G20Cr2Ni4A carburizing steel. After carburizing, quenching, tempering and other heat treatment processes, the surface hardness is 58-62HRC, the core hardness is 25-45HRC, the surface is wear-resistant, and the core has good toughness , can withstand large impact loads.
(四)附图说明 (4) Description of drawings
图1轧机压下机构用长寿命满装推力圆锥滚子轴承正剖视图。 Figure 1 Front sectional view of the long-life full complement thrust tapered roller bearing used in the pressing mechanism of the rolling mill.
图2单个推力圆锥滚子2形状图。 Fig. 2 Shape diagram of single thrust tapered roller 2.
图3轧机压下机构用长寿命满装推力圆锥滚子轴承在轧机中位置示意图。 Figure 3 is a schematic diagram of the position of the long-life full complement thrust tapered roller bearing in the rolling mill for the pressing mechanism of the rolling mill.
(五)具体实施方式 (5) Specific implementation methods
见图1，轧机压下机构用长寿命满装推力圆锥滚子轴承，具有由下方的静止的座圈1，相对座圈转动的上方的轴圈3，座圈和轴圈竖向h间设一列沿周向均布Z＝18个推力圆锥滚子2。轴圈3上端有与它配合的压下螺丝4。座圈外径D1＝409.58mm；轴圈外径D3＝407.21mm；轴圈球面截圆公称直径d3＝355.6mm； 轴承公称高度H3＝121mm；轴承总高度H＝140.77mm。见图2，每个推力圆锥滚子2最大直径Dw＝63.808mm，滚子长度L＝147.5mm，滚子半锥角ψ＝9°40′。 As shown in Figure 1, the long-life full-complement thrust tapered roller bearing is used for the pressing mechanism of the rolling mill. It has a stationary seat ring 1 below and an upper shaft ring 3 that rotates relative to the seat ring. There is a vertical h between the seat ring and the shaft ring. One row is uniformly distributed Z=18 thrust tapered rollers 2 along the circumferential direction. The upper end of the shaft ring 3 has a pressing screw 4 that cooperates with it. The outer diameter of the seat ring D 1 =409.58mm; the outer diameter of the shaft ring D 3 =407.21mm; the nominal diameter of the spherical section of the shaft ring d 3 =355.6mm; the nominal height of the bearing H 3 =121mm; the total height of the bearing H=140.77mm. As shown in Fig. 2, the maximum diameter of each thrust tapered roller 2 is Dw=63.808mm, the length of the roller is L=147.5mm, and the roller half cone angle ψ=9°40′.
见图1，沿周向均布Z＝18个推力圆锥滚子2每个滚子的轴线2.0、轴圈3滚道母线3.0延长线和座圈1的滚道母线1.0延长线均交于轴承中心轴线O1O2上一点O。 As shown in Figure 1, there are Z=18 thrust tapered rollers evenly distributed along the circumference. The axis 2.0 of each roller, the extension line of the raceway generatrix 3.0 of the shaft ring 3 and the extension line of the raceway generatrix 1.0 of the seat ring 1 are all intersected on the central axis of the bearing. A little O on top of O 1 O 2 .
见图1、图3，轴圈3上端为凸球面3.1，球面半径为R3；凸球面3.1与压下螺丝4下端的凹球面4.1相配合。见图3，整个轴承装在轴承座5内，图3中标记5为轧机轧辊。上述座圈1、轴圈3和滚子2材料均选用G20Cr2Ni4A渗钢，热处理工艺实现表面硬度为58-62HRC，心部硬度为25-45HRC。 See Fig. 1 and Fig. 3, the upper end of the shaft ring 3 is a convex spherical surface 3.1, the radius of which is R 3 ; the convex spherical surface 3.1 matches the concave spherical surface 4.1 at the lower end of the screw 4. See Fig. 3, whole bearing is contained in the bearing seat 5, and mark 5 among Fig. 3 is rolling mill roll. The above seat ring 1, shaft ring 3 and roller 2 are all made of G20Cr2Ni4A infiltrated steel, and the heat treatment process achieves a surface hardness of 58-62HRC and a core hardness of 25-45HRC.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420623872.9U CN204213167U (en) | 2014-10-24 | 2014-10-24 | Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420623872.9U CN204213167U (en) | 2014-10-24 | 2014-10-24 | Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime |
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| Publication Number | Publication Date |
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| CN204213167U true CN204213167U (en) | 2015-03-18 |
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| CN201420623872.9U Expired - Lifetime CN204213167U (en) | 2014-10-24 | 2014-10-24 | Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545570A (en) * | 2016-08-31 | 2017-03-29 | 马鞍山支点传孚智能摩擦工业研究院有限公司 | It is a kind of to roll tapered roller thrust bearing |
| CN108361287A (en) * | 2018-04-24 | 2018-08-03 | 瓦房店爱国轴承研究院有限公司 | Lengthen taper roll bearing |
-
2014
- 2014-10-24 CN CN201420623872.9U patent/CN204213167U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545570A (en) * | 2016-08-31 | 2017-03-29 | 马鞍山支点传孚智能摩擦工业研究院有限公司 | It is a kind of to roll tapered roller thrust bearing |
| CN108361287A (en) * | 2018-04-24 | 2018-08-03 | 瓦房店爱国轴承研究院有限公司 | Lengthen taper roll bearing |
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